General - Computation of Basic and Diluted Earnings Per Share (EPS) (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Oct. 30, 2021	Oct. 24, 2020	Oct. 30, 2021	Oct. 24, 2020
Earnings Per Share [Abstract]
Denominator for basic earnings per share – weighted average shares (in shares)	97,321	95,518	97,089	95,341
Effect of dilutive securities - stock options, restricted stock and stock purchase plans (in shares)	1,042	897	1,274	764
Denominator for diluted earnings per share – weighted average shares (in shares)	98,363	96,415	98,363	96,105